Adjustable mounting.



W. A. BUTCHART.

AmusT/IBLE MOUNTING.

Patented Mar. 21, 1916.

APPLICATION FILED MAR. 2| 1914.

WILLIAM A. BUTCHART, 0F DENVER, COLORADO.

ADJUSTABLE MOUNTING.

Specification of Letters Patent.

Patented Mar. 21, 1916.

Application :filed March 2. 1914. Serial No. 822,015.

To all whom it may concern Be it known that I, WILLIAM A. BUTCHART, a citizen of the United States, residing at Denver, in the county of Denver and State of Colorado, have invented a new and useful Adjustable Mounting, of which the following is a specification.

This invention relates particularly to theJ means used for supporting and adjusting the concentrating surface or deck of reciprocating concentrating' tables.

One object of my invention is to provide a concentrating table so mounted as to be easily adjusted both longitudinally and transversely.

A further object is to provide a mechanism for controllin g and varying the transverse inclination of the deck or concentrating surface and automatically retaining the said surface in the desired adjustment.

Other objects of the invention will appear hereinafter.

The accompanying drawings illustrate van embodiment of my invention, and referring thereto:

f Figure 1 is a side elevation of the table. Fig. 2 is a transverse section on line orgm2 in Fig. 1. F ig. 3 is a vertical section of the lifting screw and its operating means. Fig. 4 is a longitudinal section of one of the slipper-supports for the table. Fig. 5 is a section on line fc5-:v5 in Fig. 4.

Referring to these drawings illustrating my invention, l designates three sub-sills forming the permanent foundation of the table; 2 designates two longitudinal sills preferably made of specially bent steel channel beams, which are securely fastened to the sub-sills 1 by foundation bolts 3. Resting upon and attached to the sills or channel beams 2 are two pedestals 4, which form pivotal supports for the tilting beams 5, which are thereby retained in a fixed position longitudinally, but may be caused to swing or partially rotate upon their pivotal central bearings 6 by means of the tilting mechanism 7, which is attached at the top to lugs S on the extremities of the tilting beams 5 and at the bottom to the ends of supporting brackets 10. The ends of the tilting beams 5 are formed into cups or boxes 11 tocontain removable bearing rods 12, (see Figs. 4 and 5), upon which the deck or reciprocating portion 13 of the table is caused to slide by actuating mechanism or head motion 14. The under side of the deck 13 is furnished at four suitable points with slippers or sliding parts 15 which are removably attached thereto by cap screws 18, and which slide upon the bearing rods 12. A cover plate or hood 21 extends over each slipper 15 and is secured in position by the screw 18. The deck Al is attached to the actuating mechanism 14 by means of the connecting rod 17.

The tilting beam 5 consists of a central portion provided with bearing pivots or trunnions 19 supported in the bearings 5, to permit pivotal support upon and partial rotation about the upper end of the pedestal 4. From said central portion arms extend in either direction and terminate in the cups or boxes 11 integral therewith, and which serve the double purpose of carrying` the bearing rods 12 lying therein, and of deposits or receptacles for a large quantity of lubricant. The bearing rods 12 carried within the boxes 11 may by these means be put into permanently parallel alinement with the pivotal support of the tilting beams 5, and the bearing rods 12 may be completely submerged in `the lubricant. Integral with the box 11 are the lugs 8 providing means vfor attachment of the tilting mechanism. The advantages of this form of tilting beam are: the permanent maintenance of a common alinement between the four bearing rods 12 and the pivotal supports 19 of the beam itself. The boxes carrying the sliding bearings are so constructed that the oil supplied to them is absolutely retained and attention to lubrication is required only at long intervals, the consumption of lubricant being thereby very greatly reduced. It has the further advantage of permitting the removal of the deck without disturbing the adjustment of the bearings, or of the tilting mechanism or of the general level setting of the table. By removing the cap screws 18 and inserting shims between parts 21 and 85, as indicated at 20, in Figs. 4 and 5, at one end of the table, the longitudinal inclination of the table may be varied o-r adjusted.

Each tilting mechanism 7 comprises two oppositely threaded screws or jacks 25, 26, placed end to end vertically one above the other, and an internally threaded sleeve 28 engaging both of said screws, the upper end of the upper jack 25 being attached by the lugs 8 and pin 24 to the extremity of the tilting beam 5, the lower end of the lower jack 26 being attached by the pin 27 to the attachment of the jacks 25, 26 being such vbeams 5.

as to prevent their rotation while permitting them to swing freely in a vertical plane.

The internally threaded sleeve 2S inclosing' thejacks or screws 25,26 is integral with the bevel gear 29, meshing with which is a second bevel gear 30, rigidly attached to. a shaftV 31 which is provided with a hand wheel 16. The end of the shaft 31 is carried in bear.- ings J1-31 within the housing 32, which latter maintains the proper position and relation of the various parts inclosed and protected by it, said housing 32 having a sleeve portion 32 surrounding and forming av bearing for sleeve 28. A collar 33 screwing on the upper end of sleeve 28 and locked by set screw 33, bears on top of sleeve 32' and retains sleeve 28 in proper position. It will be understood that one of the devices, as described, is attached to each end of the horizontal shaft 81 and that both are simultaneously actuated thereby. Bevel gear 29y is supported by jack 26 on the pin 27 passing through supporting bracket 10, Vand Vthe bevel gear 30 rests on said bevel gear 29 Vso that the weight of bevel gear 30, its shaft 31 vand the housing or other parts carried thereby, is supported through bevel gear V29, pin

y27 and 4jack 26 upon bracket 10. v By, means of the handwheel 16, the shaft 31VV and bevel gears 29, 30, the internally Vmovements are imparted to the two tilting beams 5 andthence .to the deck 13 which rests upon the bearing rods 12 carried by the boxes 11 forming the ends of the tilting By employing the oppositely threaded jacks, the movement required of the hand wheel is only one half what would be required if a single jack were employed. This arrangement of the various parts prevents all movement of the deck in a vertical plane independently of the tilting mechanism, whilev permitting free reciprocation upon the bearings 12, regardless of the degree of transverse inclination. The Ywhole tilting mechanism `is carried upon and supported by the lowerjacks 26, and the arrangement is such that the housing 32 is free to move downwardly as wear occurs at the surfaces of members 29,V 30 and 32 in contact, thus maintaining the teeth of the bevel gears in' suitable position.` Wear between the exterior surface of the sleeve 28 and the interiorof Vthe housing` 32V in which it turns, vor looseness of the shaft 31Iin its bearings 31, or wear ofthe gear teeth, can i in no way impair the'efflciency of the device,

which, until the teeth of the bevel gears are entirely worn away by use, will continue to give exact adjustment. By means of the collar 33 wearmay be compensated and the sleeve 28 rigidly retained in suitable posi-l tion. Moreover, as the entire weight of the tilting mechanism is carried upon the lower jack 26, the deck always remains in the iiiclined position to which it may be adjusted.

This form of-construction, will, therefore,

practically prevent lost motion due to wear of the several parts and which has greatly impaired or Vdestroyed the usefulness of all tilting devices heretofore in use.

Shafts 12 may be mounted in position in vthe cups 11 by Babbitt bearings 3i Vcast around the lower part of said shafts. The covers 21 serve to shed any grit and water drippingfrom the vtableso as to keep the bearings free therefrom. The housings 32 f for the jacks are also provided with .aprons 38 extending over the gear wheels29 and 30 to protect the same from grit and water.

In combination, vasleeve having reversely 'it ashaft journaled inthe housing, and an i operating gear mounted on said shaft and Vmeshing with and supported by the first gear.

In testimonv whereof, I have hereunto 25th day of February, 1914.

Vset .my hand at'Los Angeles, California, this i.,

WILLIAM A, BUTCIIART.

In presence of*- Gr.l T. HACKLEY, LORRAINE E. DURRow.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents,

Washington, D. C. 

